BEST ANSWER:Hello Karen, your assumption is absolutely correct. I purchased this ramp for my father summer cottage. He is in a wheelchair and had difficulty navigating the 1 inch height difference between his porch and kitchen. I laid the Gentle Incline ramp over the existing threshold and found it stayed in place without any additional installation. We could not be happier with this product!

BEST ANSWER:Hello Karen, your assumption is absolutely correct. I purchased this ramp for my father summer cottage. He is in a wheelchair and had difficulty navigating the 1 inch height difference between his porch and kitchen. I laid the Gentle Incline ramp over the existing threshold and found it stayed in place without any additional installation. We could not be happier with this product!